Glow plug, new glow plug determination method, and glow plug driving control device
a technology of glow plugs and control devices, which is applied in the direction of electrical control, lighting and heating apparatus, machines/engines, etc., can solve the problems of not having a reliable method or device, deteriorated articles being erroneously mounted as new articles, and it is difficult to determine at a glance whether or not a glow plug is a new article. , to achieve the effect of easy determination
Active Publication Date: 2014-04-10
BOSCH CORP
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The invention provides a new glow plug that is easy to identify as a new article, and a simple method to inspect it. This is helpful in ensuring the proper functioning of the glow plug.
Problems solved by technology
Incidentally, it cannot be determined at a glance whether or not a glow plug is a new article, in many cases, due to its structure.
Therefore, for some reason at the time of replacement or the like, there is a possibility that a deteriorated article will be erroneously mounted as a new article.
However, conventionally, there has been no method or device capable of reliably and relatively easily determining whether or not a glow plug is a new article.
For example, although there is a method of determining the presence or absence of deterioration on the basis of the amount of change in the resistance as described above, this method cannot be applied as it is for determination regarding whether or not a glow plug is a new article.
Eventually, it is not possible to determine whether or not a glow plug is a new article.
Method used
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[0020]Hereinafter, an embodiment of the invention will be described with reference to FIGS. 1 to 7.
[0021]It will be noted that the members and arrangements described below are not intended to limit the present invention and can be variously modified within the scope of the gist of the present invention.
[0022]First, the mechanical configuration of a glow plug according to the embodiment of the invention will be described with reference to FIG. 1.
[0023]The glow plug shown in FIG. 1 is a configuration example of a ceramic type glow plug, and the basic configuration is almost the same as those conventionally known except that a new electrically component not present in the related art is added as will be described later. Accordingly, the configuration shown in FIG. 1 will be schematically described.
[0024]A glow plug 1 is formed by inserting and fixing a ceramic heater 2, a metal outer cylinder 3, an electrode lead-out line 4, and a first electrode rod 5, and a second electrode rod 6 int...
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There is provided a new glow plug that can be easily determined as to whether or not it is a new article.An additional circuit 12 formed by connecting a diode 13, a fuse 14, and an adjusting resistor 15 in series in this order is connected in parallel to a heating element 11 of a glow plug 1. The diode 13 is provided so as to have an anode located on the positive electrode side of the heating element 11 and a cathode located on the fuse 14 side. In the case of a unit inspection, by applying a positive voltage for test to a heating element negative electrode connecting portion 3a, it is possible to determine whether or not the glow plug 1 is normal without blowing the fuse 14 before the glow plug 1 is used in a vehicle.
Description
BACKGROUND OF THE INVENTION[0001]The present invention relates to a glow plug used in a diesel engine or the like, and in particular, to further improvement of the reliability of a glow plug and a vehicle based on providing a new glow plug, which can be easily determined as to whether or not it is a new article at the time of replacement, and providing a new article determination method.[0002]The quality of a glow plug used in a diesel engine or the like may have a large influence on a startup of a diesel engine or the like. For this reason, various devices for detecting the deterioration have been proposed and put to practical use up to now. For example, a method of determining the presence or absence of deterioration on the basis of a change in the resistance of a heater has been proposed (for example, refer to JP-A-2009-191842).[0003]Incidentally, it cannot be determined at a glance whether or not a glow plug is a new article, in many cases, due to its structure. Therefore, for s...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F02P19/02
CPCF02P19/02F02D41/266F02D2041/2058F02P19/027F23Q7/001
Inventor NAKAMURA, TOMOHIROTANAKA, YUTAKAFUJISHIRO, YOSHIHITOTOYOSHIMA, YASUO
Owner BOSCH CORP